Half to hans a



UNITED STATES PATENT OFFICE.

ANDREW EGKMAN, OF GRANITE FALLS, MINNESOTA, ASSIGNOR OF ONE- HALF TOHANS A. MIKKELSON, OF SAME PLACE.

MACHINE FOR TRIMMING SPOKES.

SPECIFICATION forming part of Letters Patent No. 268,787, dated December12, 1882. I Application filedMay 22, 1882. (Modeld 1'0 all whom it mayconcern Be it knownthat I, ANDREW EOKMAN, of Granite Falls, county ofYellow Medicine, and State of Minnesota, have invented a new Machine forTrimming Spokes, for the use of carriage and wagon makers in gaging andturning the tenons of wagon or carriage spokes or other tenons beforeinserting the same inthe mortise, as will be shown by the accompanyingmodel and drawings.

My invention relates to a machine for dress ing and finishing the footand shoulders which form the tenons of spokes for wheels; and the objectof this invention is to provide a simple, economical, and efficientdevice for tapering the tenons on the inner ends of spokes and forforming the shoulders thereon; also, in providing a machine which may beused for forming tenons of different sizes.

My invention consists of a reciprocating sash withface and side knivesfor finishing and dressing the tenon, and in an organized machine,consisting of certain adjustable parts and a'movable table forpresenting the ends of spokes to the cutting-knives, the parts bein gconstructed, combined, and arranged with especial reference to theiroperation upon tenons of spokes for wheels, as will be hereinafter setforth and claimed.

In the annexed drawings, Figure 1 is a perspective view of my inventionadapted for planing and forming the tenons and shoulders on spokes forwheels of vehicles. Fig. 2 is a perspective view of the bedplate withthe operating parts detached. Fig. 3 is a plan view of thespoke-carrying table detached from the machine. Figs. 4, 5, 6, and 7 aredetailed views; and Fig. 8 is a rear view of the vertical reciprocatingframe, showing the operatinglever.

In the accompanyingdrawings,A represents an upright rigid frame, withinwhich is secured a vertical reciprocating sash, which is provided with aface-plate, a, in which is seated the transverse knife b, which issecured within a recess in the faceplate by set-screw s. In the rear ofsash a, opposite the lower edge of the knife b, is an opening, the loweredge of which is beveled, after the manner of a carb, are secured insuitable dovetailed recesses,

knives c 0, one of which projects beyond the face of the plate I). Theseknives c c are for forming the shoulder and for cutting off the tenon.

On the rear of the frame A, and to one side of the same, is secured thelever 0, which is connected to the sliding sash by a link, at, which ispivoted or bolted at one end to the reciprocating sash a and at theother end to the operating-lever G. This operating-lever is embracednear its free end by a guide or strap, 6, which is attached to one ofthe standards of the frame A.

The bed-plate B, as shown in Fig. 2, is cut standards of the frame A areattached, so as to form a passage-way for the sliding sash.

Attached to this bed-plate, opposite the frame A, is a bracket, B, forsupporting the end of the table. This bed-plate B is provided near itsrear end with a recessed portion, f, into which the guide or rest forthe end of the spoke is secured.

Above the bed-plate B, near its end, and at a suitable distance from thereciprocating out ters, is pivoted a table or spoke-support, D, which isprovided at its free or movable end with an extended portion, D, whichis cut away, as shown, so as to form a recess in which the personoperating the machine may stand, so as to have the operating-lever,spoke, and the horn, or end of the movable table, within easy reach, soas to operate the parts. Secured within the transverse recess in thepivoted table D, opposite the sliding sash a, is a raised plate, d, oneedge of which is cut away so as'to form an angle, as shown at d, Fig. 3-Above this plate d, which acts as a guide, is attached an adjustablefoot, E, which is provided on its side nearest to the operator with anindex or finger, g, which points toward suitable 'graduations, h, on thetable. This slide or gage bar E has an upright foot at its end, whichserves as a stop or hearing for the spokes, and it is adjustable, so asto accommodate difl'erent sizes of tenons, the depth of the tenons to beout being indicated by the gage. Attached to the outer standard of theframe A is a spring, F, the lower end of which'abuts against the innerside of the movable table, so as to throw the spoke-carrying table awayfrom the sliding sash. On the opposite side of the frame A is aset-screw, which limits the play of the movable table toward the cutter.The outward play of the table is limited by vertical and transverse pinssecured to the table and bracket B.

Within the recess f,.at the end of the bedplate B, is secured a T-shaped bracket, H, which is adjustable vertically. The cross-bar of thisbracket is provided with a gage, B, which is adjustable transverselywith the bedplate B. These brackets or foot-rests are provided withsuitable thumb-screws or other securing and adjusting means forattachingand retaining the same in position. The knife 0 is of therequisite length for cutting off the end of the spoke at the sameoperation of forming the tenon and shoulder, and, if desirable, thisknife may be dispensed with. These knives a 0 are both secured removablyto the frame.

The operation of this invention may be described as follows: The spokeupon which it is desired to form the foot and shoulder is laid upon thetable D, the foot being placed near the end of the table opposite thevertical reciprocating sash and against the slide E, which is adjustedaccording to thedepth of theshoulder required, which depth will beindicated by a pointer and graduated scale on the table. The end of thespoke which will form the foot being placed between the cutter and slideE, the table is pressed toward the knives, which are reciprooated, andremove a portion of the spoke, thus forming one side of the shoulder andtenon. To form the shoulder and tenon on the other side the spoke isreversed. To form a single tenon with angular shoulder the gages E and Hat the end of the bed-plate will be adjusted so that the central portionof the spoke will be parallel with the cutter b.

If desirable, the vertical and lateral adj ustments H and G on the endsof the bed-plate can be set'so as to give any desired slope to theshoulders and sides of the tenon. The raising of the guide H, upon whichthe end of the spoke rests, gives the slope or bevel to the shoulder ortenon, or forms the shoulder,which will be at an angle with the spoke,which is desirable in staggered wheels. The moving of the block Gtransversely gives the slope to the sides of the tenon. After theshoulders and tenons are formed the lateral guide G at the end of thebed-plate is set at one side, so that the spoke may lie at an' anglewith the face of the reciprocating cutter, the side knives being'removedfrom the face-plate, when the foot of the spoke may he reduced to thedesired bevel by the flat knife. The angular portion 61 will act as aguide, over which the shoulder on the end of the spoke rests. This plated is raised sufficiently to keep the, shoulder of the spoke away fromthe table.'

I reserve the right to make subsequent application for the improvementsherein shown and described, but not claimed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-'- 1. In a spoke-tenoning machine, themovable table D, provided with an adjustable gagefoot, E, and a raisedbed, d, with an angular portion, (1. in combination with the verticallyand laterally adjustable gages H and G, substantially as'shown.

2. In an organized machine for forming the tenons of spokes, thecombination of the verticalreoiprocatingcutter, bed-plate, and swingingtable, provided with an adjustable gage- 'foot for holding the end ofthe spoke upon which it is desired to form the tenon against the cutter,and vertically and laterally adjustable rest for the end of the spokeattached to the bed-plate for holding the end of the spoke in positionand give the desired bevel to the shoulder and foot, substantially asdescribed.

3. In a device for tenoning and beveling the ends of spokes, thecombination ofthe following organized instrumentalities: a bed-platesupporting a laterally-swinging spoke-carrying table, and verticalframe, with sash, provided with face and side knives and means forthrowing the table away't'rom the knives, and limiting its play both toand from the knives, said table being provided with an adjustable andgraduated gage-foot, the bed-plate being provided near the pivoted endof the table with vertically and laterally adjustable rests for the endsof the spokes and means for operating the cutters, substantially asshown and described.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREW EGKMAN.

Witnesses v T. W. TASKER, H. A. MIKKELSON.

